load balancing using my neighbourg

[ppe]

hello,

I'm IT/network admin a little firm (<10 workers).
i have this network fully operational :

Sometimes, we have network disruptions, my question is how take the internet from my neighbor network (using one of his lan port) in case of internet disruptions to feed my all network. Or if it is too complicated, to feed only the guestwifi ?

Thanks,

[NogBadTheBad]

@ppe

https://www.youtube.com/watch?v=HMWRCXSFVjU

[ppe]

hello,
first, i set a wan2 interface on the lan port 3 using vlan.

then, i have follow this guide : https://thehomelabber.com/guides/pfsense-wan-failover/ .

in the dns step, i set dns ip a little bit randomly (i take google for the 1st and cloudflare for the second)...
i don't understand why we can't set same dns ip for the two.

here, my new network

I realize that i had set a dns for the wan2 that i couldn't ping... i don't test if it work since now...

[ppe]

i set dns like this :
wan1 : 8.8.8.8
wan2 8.8.4.4

when i disconnect the wan2 cable, i can ping only 8.8.4.4 but nothing else...

PS C:\Users\ppe> ping 8.8.4.4

Pinging 8.8.4.4 with 32 bytes of data:
Reply from 8.8.4.4: bytes=32 time=11ms TTL=116
Reply from 8.8.4.4: bytes=32 time=11ms TTL=116
Reply from 8.8.4.4: bytes=32 time=11ms TTL=116
Reply from 8.8.4.4: bytes=32 time=11ms TTL=116

Ping statistics for 8.8.4.4:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 11ms, Maximum = 11ms, Average = 11ms
PS C:\Users\ppe> ping 8.8.8.8

Pinging 8.8.8.8 with 32 bytes of data:
Reply from 192.168.2.1: Destination host unreachable.
Reply from 192.168.2.1: Destination host unreachable.
Reply from 192.168.2.1: Destination host unreachable.
Reply from 192.168.2.1: Destination host unreachable.

Ping statistics for 8.8.8.8:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
P

[ppe]

from wan2, i can ping common website when the both wan are connected.
But when wan1 is disconnected, everything is very slow and i can't ping anything :